Question

Two cylinders of same cross section and length L but made of two material of density p1 and p2 RC mentors together to form a cylinder of length 2L if the combination floats in water with the length L by 2 above the surface of water and p1<p2 then
a) p1>1g /cm³
b) p2>3/2 g/cm³
c) p1<8/9 g/cm³
d) p1<3/4 g/cm³

Answer 1

in step 3 =>

density = mass / volume

mass = density * volume

=area * length *density (volume= area * length)